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// CODE SNIPPET

1612.3.1 Design Flood Elevations

Building Code 2018 of Illinois > 16 Structural Design > 1612 Flood Loads > 1612.3 Establishment of Flood Hazard Areas > 1612.3.1 Design Flood Elevations
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Where design flood elevations are not included in the flood hazard areas established in Section 1612.3, or where floodways are not designated, the building official is authorized to require the applicant to do one of the following:

  1. Obtain and reasonably utilize any design flood elevation and floodway data available from a federal, state or other source.
  2. Determine the design flood elevation or floodway in accordance with accepted hydrologic and hydraulic engineering practices used to define special flood hazard areas. Determinations shall be undertaken by a registered design professional who shall document that the technical methods used reflect currently accepted engineering practice.

Related Code Sections


107.2.6.1 Scope and Administration, Design Flood Elevations
Where design flood elevations are not specified, they shall be established in accordance with Section 1612.3.1 ...
Building Code 2018 of Illinois > 1 Scope and Administration > 107 Submittal Documents > 107.2 Construction Documents > 107.2.6 Site Plan > 107.2.6.1 Design Flood Elevations
1107.7.5 Accessibility, Design Flood Elevation
horizontal structural building members of nonelevator buildings are at or above the design flood elevation resulting in all of the following: A ...
Building Code 2018 of Illinois > 11 Accessibility > 1107 Dwelling Units and Sleeping Units > 1107.7 General Exceptions > 1107.7.5 Design Flood Elevation
1612.3.1 Structural Design, Design Flood Elevations
Where design flood elevations are not included in the flood hazard areas established in Section 1612.3, or where floodways are not designated ...
Building Code 2018 of Illinois > 16 Structural Design > 1612 Flood Loads > 1612.3 Establishment of Flood Hazard Areas > 1612.3.1 Design Flood Elevations
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